Haw. Code R. § 12-47-31
After the filing of the notice of appeal any party may proceed to obtain discovery by deposition upon oral examination, written interrogatories, or request for production of documents in the manner and effect prescribed by the Hawaii Rules of Civil Procedure; provided that to protect a party or person from undue burden or expense or for other good cause, the board may on motion by any party or on its own motion, order that the discovery not be taken or be taken upon such terms and conditions as the board may specify. The board may upon written application and for good cause shown, compel discovery, order that discovery be made by any other means prescribed by the Hawaii Rules of Civil Procedure, and impose sanctions as provided by the Hawaii Rules of Civil Procedure or section 12-47-48, or both, as it deems appropriate, for the failure of any party or person to allow discovery.
Haw. Code R. § 12-47-31